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Finite Sets of Integers
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<H2 CLASS="section"><A NAME="htoc143">10.2</A>&nbsp;&nbsp;Finite Sets of Integers</H2>

In the context of the <EM>ic_sets</EM> library, (ground) integer sets are
simply sorted, duplicate-free lists of integers e.g.
<BLOCKQUOTE CLASS="quote"><PRE CLASS="verbatim">
SetOfThree = [1,3,7]
EmptySet = []
</PRE></BLOCKQUOTE>
Lists which contain non-integers, are unsorted or contain duplicates,
are not sets in the sense of this library.<BR>
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